Below is a list of Tewksbury MA zip codes. For your research we have also included Tewksbury Area Code, Time Zone, UTC and the local Middlesex County FIPS Code. Each Tewksbury Massachusetts zip code has a center Longitude / Latitude point (the Tewksbury center is -71.233703613281 / 42.612201690674). For your convenience we have also indicated if that zip code in Tewksbury observes Daylight Savings time.